Centrifugal separator



M y 19 L. D. JONES 2,350,041

CENTRIFUGAL SEPARATOR Filed March 21, 1942 INVENTOR Leo Djones.

A TTORNE Y Patented May 30, 1944 UNITED STATES PATENT: OFFICE,

CENTRIFUGAL SEPARATOR Leo D. Jones, Philadelphia, Pa., assl'gnor to TheSharples Corporation, Philadelphia, Pa., a corporation of DelawareApplication March 21, 1942, Serial No. 435,601 1 3 Claims. (Cl. 210-68)The present invention pertains to centrifugation, and includes a processand machine for dehydrating solids and separately disthe art of quenceof rapid intermittent movements from a centrifugal rotor in which theyare dehydrated.

- Such schemes have been subject to the objection that they entail ahigh degreeof friction between v the rotor toward the discharge pointwithout the use of complicated apparatus and without any relativerotation between the ,surface of the rotor along which the solids mo'g'eand the tool by which they are discharged.

These results are attained by providing a disc which oscillates aboutaxes at right angles to the axis of rotation of the rotor while rotatingwith the rotor. This oscillation is preferably in the nature of acompound movement providing a wobbling of the periphery of the disc forcausing longitudinal movement of the solids, and is produced by aspecial mechanical movement as described hereinafter.

Further features of the invention, and the de- 7 wall of the rotor,after passing through the screen 29.

A casing Ii surrounds the end of quill it re mote from the rotor l0, andthis casing is secured to the outer casing 16 of a speed reducingmechanism 30. This speed reducing mechanism includes a high speed shafti1 and a low speed shaft i8, projecting from opposite ends of thecasing. Any standard form of speed reducing mechanism designed toreceive power from a high speed shaft such as I1 and transmit that powerto a low speed shaft such as l8 may be in the practice of the invention.

A shaft i9 is mounted in a self-aligning bearing 20 on the axis ofthe'rotor ill, and a flange '2! is secured to the end of the shaft 19withn the rotor. A disc 22 designed to effect discharge of solids fromthe rotor is secured to the flange 2|, and the outer circumference ofthis disc lies in close proximity to the screen 29, with sufficientclearance to permit oscillating movement of the disc relatively to thescreen in 'a manner which will be described hereinafter.

A conical feed tube 23 is secured to the disc 22 by a number of rods 24.A pipe 25 is provided for feeding mixtures of liquid and solids to therotor, and the inner end of this pipe projects into the conical feedtube 23.

The. end of the shaft is isconnected to a ball 26 mounted for freerotation with respect to a socket 21 eccentrically mounted upon shaftII, the self-aligning bearing connection between ball 26 and its. socketpermitting free rotation of shaft IS with respect to socket 21 andmovement of the axis of this shaft as described hereinafter.

The quill I i and other rotating parts derive their power from pulley28, as will be evident from the following, description of the operationof the machine,

. In operation, power is applied to the drive pulley 28, and this causesrotation of the quill II and rotor Ill. The mixture to be treated isthen passed tothe rotor, being passed into contact with the screen 29through the annular passage defined by the feed tube 23 and disc 22. The

disc 22 may be caused to rotate at the same speed As illustrated in thedrawing, the centrifugal Y rotor is attached to a quill II, whichrotates in bearings l2 and I3. The rotor is surrounded by a stationarycasing it, into which liquid removed from solids passes throughperforations in the be rotated at substantially the same speed as therotor, and a wobbling motion will also be imp rted to this disc. Themanner in which this oscillatory'or wobbling motion is attained willbeevident from the following discussion.

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